Research Article

Performance Analysis and Microbial Community Evolution of In Situ Biological Biogas Upgrading with Increasing H2/CO2 Ratio

Figure 5

(a) Relative abundance of the archaeal community structure on the family level. R1_III b and R2_III b labelled with “X” are without consideration due to unideal archaea sequencing results. (b) Heat maps of relative abundance (>0.5%) of the most abundant archaeal ASVs of R1 and R2.
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